Automobile jack



H. SECKENDORF AUTOMOBILE JACK Oct. 9, 1951 2 Sheets-Sheet 1 Filed May 1'7, 1948 Hugo eo ire 72 4073/ Oct. 9, 1951 SECKENDQRF 2,571,067

AUTOMOBILE JACK Filed May 17, 1948 2 Sheets-Sheet 2 Z 54- Zz 56 3/ Hugo 860%87240 7/ MMyM Patented Oct. 9, 1951 UNITED STATES PATENT OFFICE r 2,571,067 AUTOMOBILE JACK Hugo Seckendorf, Albany, N. Y.

Application May 17, 1948, Serial No. 27,546

1 Claim. (Cl. 254-86) This invention relates to an improved automobile jack.

It is an object of this invention to provide an improved automobile jack of the kind to be more particularly described hereinafter which is particularly adapted'to be fixedly mounted on the frame of an automobile and hydraulically operated by a pump mounted in or on the automobile whereby the operator may raise a wheel or the entire end of a car by simply actuating the Another object of this invention is to provide a jack of this kind which is mounted in operative position in such a manner that it is unnecessary for a mechanic or the like to first position the jack before the raising motion may be started.

The jack or jacks are mounted on the frame in a position to raise one end or one wheel of the car when they are extended and are mounted to substantially clear any and all road obstacles which the other parts of the car, as the differential housing, will clear.

on the hydraulic ram for solidly engaging an in- 1 clined surface under the car.

Yet another object of this invention is to provide a jack pad or foot for a jack of this kind which is spring-pressed against the lower end of the ram to prevent rattling when the car is in motion, and so mount the pad that sticking of the pad to the ram or its mounting pin due to rust and corrosion is eliminated thereby insuring construction and arrangement of my jack will raise them sufliciently high to clear the wheels to render them accessible for removal or mounting.

To the foregoing objects, and others which may hereinafter more fully appear, the invention consists of the novel construction; combination and arrangement of parts, as will be more specifically referred to and illustrated in the accompanying drawings, but it is to be understood that changes, variations, and modification may Figure 2 is a transverse section of the auto mobile, partly broken away, showing the mounting of a single jack for lifting the front endpf a vehicle.

Figure 3 is a longitudinal section showingthe side elevation of a jack shown in Figure '1. Figure 4 is a vertical section taken on the line 44 of Figure 3. I a Figure 5 is a transverse section taken on the line 55 of Figure 4. Figure 6 is a fragmentary vertical 4 section taken on the line 6-6 of Figure 4. Y 7

Referring to the drawings, the numeral Ill designates generally a hydraulic jack for an automobile which may be fixedly mounted on the vehicle for selectively raising the front or rear end thereof or a selected wheel. In Figures 1 and 2 the different mountings for the jack I10.

are shown. Figure 1 shows the jacks mounted adjacent each of the rear wheels whereby either one of the wheels may be raised independently of the rest of the vehicle or both of the wheels and the rear end of the car may be lifted. Figure 2 shows the mounting of a single jack midway between the two wheels as the jack would be mounted at the front of the car wherein the wheels are separately mounted and it would; be advisable to raise the whole front end rather than each of the separate wheels. a

When the jacks are mounted on the rear of the car they would be mounted close to the axle and when the jack is mounted in the front of the car it would be mounted most conveniently immediately forward of the radiator of the car between the radiator and the grill. In either preferred mounting the structure of the jack and the jack pad will be the same as will be described hereinafter and the same type of hydraulic lines and connections would be employed.

As shown in Figure 4 of the drawings, the jack I0 is constructed with an outer cylindrical body ll having a piston I2 slidably mounted therein. A piston rod or shaftl l is fixed on the lower end of the piston l2 and extends through thelower end of the cylinder. The cylinder is closed at its top end by an apertured wall l5 and a detach- 3 able cap |6 closes the lower end. The cap I6 is threadably engaged with the lower end of the cylinder body H and a depending boss or hearing I! is carried by the cap for providing a journal and guide for the shaft l4.

An exteriorly threaded stud I8 is fixed to or formed on the upper end of the cylinder II and is preferably formed integral with the cylinder as shown in the drawings. The stud l8 has a central opening I9 to provide an inlet opening for the hydraulic fluid under pressure. An elbow or other connector is adapted to be threadably engaged within the aperture If] for connecting a hydraulic line 2| to the cylinder I A depending stud 22 is fixed to or formed on the lower end of the rod l4 and is preferably concentric therewith. The lug 22 provides, an ele: ment of the attaching means for securing a jack pad 24 to the lower end of the piston rod M. A washer 25 having a central opening 26 is adapted to be loosely engaged about the stud 22. The washer 25 has a flat upper-surface and a lower downwardly convex surface for the purpose to be described hereinafter.

The jack pad 24 is formed ofa hollow inverted cup-shaped body open at the bottom thereof. The pad 24 is formed with downwardly diverging side walls 21 having an outwardly extending flange 28 at the lower end thereof for engagement with the supporting surface. The top wall 29 of the jack pad is concave upwardly for receiving therein the convex side of the brass washer 25. The top concave wall 29 isprovided with an enlarged central opening 30 therein within which the depending stud 22 is adapted to be loosely-disposed. The opening 30 is substantially greater than the opening 26 in the washer to provide for the swivel movement of the lug 22 therein. I

9 An annular washer 3| is carried by the lower end of the stud 22'within the confines of the pad 24. The washer 3| is'provided'with a horizontal wall 32 having a central opening therein through which the stud 22 is adapted to be engaged. A

downwardly offset flange 34 is formed on the washer 3| to provide a seat for the lower end of the spring 35. The spring 35 is mounted-between the washer 3| and the lower side of the concave top wall -29-of the pad 24. The spring 35 constantly biases the washer 3| downwardly and a pin, as 36, engaging through the lower end of the stud 22 supportsthe washer 3| on-thelower endof the stud. In this way the spring 35 frictionally presses the pad 24 upwardly forengagement with the lower end of the piston rod l4. The-enlarged opening 30 in the wall'29 will permit the swivel movement of the stud 22 when the pad 24 is mounted or in engagement with the ground or support at an angle to the horizontal axis of the vehicle to be supported. The swivel movement between the pad 24 and the stud 22 is supported by the washer 25, the bearing surfaces of the top wall 29 abutting the convex surface of the'washer.

'In the use and operation of this jack I0, hydraulic pressure will be admitted through the inlet tube 2| for forcing the piston and piston rod |4 downwardly within the cylinder A spring 31 disposed about the shaft |4 abuts the upper side of the cap I6 and. the lower side of the piston H for constantly urging the piston and piston rod 4 upwardly into the cylinder The hydraulic pressure will move the piston and piston rod downwardy against spring tension. The spring mounted jack pad 24 will then search its own the upper end of the vertical arm 46.

support upon engagement with the ground to provide a firm base for the jack.

In Figure 4 the jack I0 is illustrated as mounted on the back of the frame of an automobile or other vehicle. The jack I0 is mounted on one of the longitudinal beams 40 of the frame which is U-- shaped in configuration having the horizontal arms fixed to the upper end of a bight portion 4|, the beam itself opening inwardly of the vehicle. A mounting pad 42 which may be made of wood or other suitable material is fixed between the mounting bracket for the jack and the beam itself. A mounting bracket as 44 is provided for securing the jack ID to the beam. The bracket 44 is L-shaped having a horizontal arm 45 at The vertical arm 46 is provided with a plurality of openings 41 through one of which a bolt 48 may be engaged for securing the bracket onto the frame. The wooden block '42 provides a shock absorber or anti-rattling device for the m unt ne f eie The horizontal arm 45 is provided with a central opening 49 therein for engagement about the stud l8 for securing the horizontal arm 45 of the bracket 44 to the upper end of the jack H1.

The cap i6 which closes the lower end of the cylinder I! is provided with an outwardly extending attaching ear 5| to which a supporting arm or rod 52 may be attached for. securely supporting the lower. endzof the jack. In this mount,- ing of the jack if} the stabilizing arm 52 is connected at the lower.- end to the ear 5| and the upper. end of the rod 52, is connected to a trans.- verse beam or support 54 fixed on the frame of the vehicle. The upper end of the arm 52 is fixedv midway the length of the cross arm. 54 and an arm 52 connecting a jack on the other side of the vehicle may also be attached at this point.

As shown in Figure 2, the jack I0, is mounted midway between the two front wheels of the vehicle and as stated above is preferably mounted forwardly of the radiator. and rearwardly of the grill of the body. An elongated mounting bracket 44a is provided which is attached at its opposite ends to the side frames 55 of the vehicle. The upper end of the jack m is fixed midway the length of the supporting bracket 44a in the same manner that the upper end of the jack is supported to the upper end of the bracket 44. The bracket 44 is formed with a pair of side arms 56 which extend upwardly and convergingly together from the side frame members 55 of the chassis of the vehicle. The upper end of the jack- IB is secured at the apex formed by the convergence of these two side arms 56. The lower end of the jack I0 shown in Figure 2 i s'supportedbya single supporting arm 51 disposed in substantially the same relation to the jack as the arm 52 described above. One end of the arm 51 is secured to an ear 5| fixed to or formed on the lower end of the jack and the other end of the rod 51 is fixed to the side frame member 55.0f the chassis.

In the use and operation of this jackassembly, a separate pump which may be actuated by the operator is to be provided in the vehicle at'a suitable position as in the trunk thereof and separate connecting lines 2] will be connected between the pump and the various jacks although a suitable valve assembly may be utilized for selecting one or more of the jacks as desired.

,1 claim:

I aia k avingav rtical supp rti member and a reduced diameter lug depending from the lower end thereof, a mounting pad for said jack comprising an inverted frustroconical cupshaped body, a fiat peripheral flange about the rim of said body, an upwardly uniformly concave top wall having an enlarged opening therein on said body, a downwardly convex brass bearing member loose on said lug seating wholly within said concave wall, said lug engaging through said enlarged opening in said concave wall, a flanged washer on said lug within said body, a compression spring about said lug engaging the flange on said washer and said top Wall resiliently holding said bearing member in engagement with said concave Wall, and a cotter pin securing said washer on said lug.

HUGO SECKENDORF.

6 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 392,861 Geyer Nov. 13, 1888 1,065,060 Leyner June 17, 1913 1,810,657 Kohler June 16, 1931 1,957,151 Pollard May 1, 1934 2,381,529 Willis Aug. '7, 1945 2,512,108 Liptay June 20, 1950 

